if, elseif, else

Der er noget galt her.
Den skulle stoppe hvis brugernavn (login) eller shopname allerede er optaget. Problemet er at den opdatere shopname og username selvom de allerede eksistere i tabellen.

Her er noget af koden:

//Checking if username and/or shopname is already in use
$sql_doublecheck1 = mysql_query("SELECT * FROM shops WHERE shop='$shop' ");
$sql_doublecheck2 = mysql_query("SELECT * FROM shops WHERE username='$username' ");
$doublecheck = mysql_num_rows($sql_doublecheck1);
$doublecheck = mysql_num_rows($sql_doublecheck2);

if($doublecheck1 != 0){
    echo "<strong><font color=red>Was not able to edit the shop information. Shopname already in use.</font></strong>";
} elseif($doublecheck2 != 0){
    echo "<strong><font color=red>Was not able to edit the shop information. Username already in use.</font></strong>";
} else {
    echo "<strong><font color=green>Shop has been edited with the following information:</font></strong><br/>";